// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV }) // 使用当前云环境

// 云函数入口函数
exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()
  const {fileID} = event;
  let result = await cloud.database().collection('users').where({
    _openid: wxContext.OPENID
  }).update({
    data: {
      avatarUrl: fileID
    }
  })
  return result
}